| 摘要 |
PURPOSE:To make it possible to improve the build up of light output by arranging the amalgam of high concentration mercury closely to the electrode so as to quickly supply the mercury at the first stage of burning and by controlling the mercury vapor pressure with its exhaust tube of the coldest portion at the steady burning time. CONSTITUTION:A translucent globe 3 is mounted on the shell having E type base 5 and its space is divided into the spaces 1a, 1b of No.1 and No.2 with a diaphragm 12, and a fluorescent lamp arraratus is formed by enclosing a stabilizer 16 in the 1b and by enclosing the bent tube fluorescent lamp 17 of double U-type whose electrode 19 is closely arranged with the amalgam 21 of high concentration mercury and further by supporting the lamp 17 with the holding portion 14 so as to have its exhaust tube 22 which is extended into the No.1 space 1a. Therefore, the build up of light output at the first stage of burning can be improved by quickly supplying the mercury from the amalgam 21 and also, the mercury vapor pressure of discharging space at the steady burning time can be properly controlled with its exhaust tube 22 of the coldest portion. |
